There is about a 45 minute time frame before it moved to the next area. I wouldn't induce vomitting after an hour. I have used salt and mustard in the past, not together.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD